In a letter to Kharge, Khan said he will not campaign for party candidates for the remaining phases of the Lok Sabha polls and is also resigning from the state Congress campaign committee.
The BJP's nationwide vote share saw its steepest decline in Rajasthan, falling by 9.23% from 2019, resulting in the loss of 11 seats.
The Congress leader said his sister Priyanka Gandhi will be representing Wayanad if the people give her an opportunity and expressed confidence that she will do an excellent job at being their MP.
Pawar is expected to play a crucial role in deciding the future course or action of the opposition alliance.
Sources said the decision was taken at a meeting of INDIA bloc leaders, who met on Friday morning in the chamber of Leader of Opposition Mallikarjun Kharge in Parliament House.